A novel basket device

Abstract

A novel basket device belongs to hoisting equipment technical field, including electric lifting type basket body, detection switch, still have control circuit, contact wheel mechanism, contact wheel mechanism includes electromagnet, electric telescopic rod, contact wheel, fixed frame, pressure sensor, contact wheel is steel material, electromagnet is installed in contact wheel, contact wheel is rotatably installed in fixed frame front end, fixed frame rear end is installed in pressure sensor one end, pressure sensor other end is installed in electric telescopic rod front side end, electromagnet in contact wheel is powered through slip ring and contact piece, detection switch, control circuit, electric telescopic rod electric connection, the novel in basket and work surface front end interval too big or too small, pressure sensor detects, can automatically adjust the interval of contact wheel and work surface reaches appropriate state, and when working in steel material work area front, still can make contact wheel attract in work surface, bring convenience to staff, and can realize better safety effect.

Description

Technical Field

[0001] This utility model relates to the field of hoisting equipment technology, and in particular to a novel suspended platform device. Background Technology

[0002] Electric lifting suspended platforms are a type of high-altitude work equipment used in many fields, such as glass cleaning in buildings, and maintenance of high towers, shafts, oil tanks, utility poles, and wind power plants. The general structure of an electric lifting suspended platform includes a basket, an electric winch, and pulley blocks. In application, a lifting wire rope is installed at a high point in the work area. The lower end of the wire rope is fixedly connected to the electric winch inside the basket via pulley blocks on the basket (usually equipped with a wire rope safety lock; if the suspended platform descends too quickly for various reasons, the safety lock prevents the equipment from descending further along the wire rope, reducing the probability of accidents). During work, the worker stands inside the basket and controls the winch to wind or unwind the wire rope via a power switch, thus raising or lowering the suspended platform to different heights to complete the work.

[0003] With the advancement of industrial technology, the functions of electrically operated suspended platforms have become increasingly sophisticated. For example, the authorized patent in my country, patent number "202121660535.3" entitled "A Lightweight Electric Suspended Platform Lifting Machine," states that "this utility model, by setting a limiting frame, a rotating disk, and a limiting mechanism, utilizes the rotational meshing of the rotating disk and the limiting rack to limit the lifting of the suspended platform during the lifting process, preventing swaying and improving the stability of the lifting platform." As can be seen above, although the comparative patent achieves its stated inventive purpose, like other electric suspended platform lifting machine technologies in this field, it still suffers from the following technical shortcomings due to structural and functional limitations. Specifically, the actual working area cannot be a vertical plane. In order to ensure that the guide wheel at the front of the basket (which contacts the front of the working area to prevent the basket from shaking during operation) effectively contacts the front of the working area, the staff needs to manually adjust the handle. This will cause inconvenience to the staff. In addition, since it is a manual adjustment, when the staff is inexperienced, or when the front of the guide wheel is adjusted to make too much contact with the front of the working area, or when the distance between the basket and the working area is too large, the basket will tilt, creating some adverse safety hazards. Utility Model Content

[0004] To overcome the shortcomings of existing electric suspended platform hoists, which are limited by their structure and function as described in the background art, this utility model provides a new type of suspended platform device based on an electric lifting platform body, which replaces the guide wheel of the electric lifting platform body with a contact wheel mechanism. In application, no manual control by the operator is required. After the operator enters the basket, the relevant circuit will automatically be energized and work. In actual operation, if the distance between the basket and the front end of the working surface is too large or too small, the distance between the contact wheel of the contact wheel mechanism and the working surface can be automatically adjusted to a suitable state. Moreover, when working in front of steel materials (such as oil tanks), the contact wheel can also be attracted to the working surface by the action of an electromagnet. This provides convenience for the operator and achieves better safety.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A novel suspended platform device includes an electrically lifting suspended platform body, a detection switch, a control circuit, and a contact wheel mechanism. The contact wheel mechanism includes an electromagnet, an electric telescopic rod, a contact wheel, a fixing frame, and a pressure sensor. The contact wheel is made of steel and has a hollow internal structure. The electromagnet is fixedly installed inside the contact wheel. The shafts at both ends of the contact wheel are rotatably mounted on the front end of the fixing frame. The rear end of the fixing frame is fixedly mounted on one end of the pressure sensor, and the other end of the pressure sensor is fixedly mounted on the front end of the movable column of the electric telescopic rod. An insulating sleeve is fixedly installed on the outside of one end of the shaft of the contact wheel. Two metal slip rings are fixedly installed at intervals, and the wires connecting the inner sides of the two slip rings are connected to the power input terminal of the electromagnet; an insulating seat is fixedly installed at one end of the inner side of the fixing frame, and two metal contact plates are fixedly installed at intervals on the outer side of the insulating seat; the cylinders of the two electric telescopic rods are fixedly installed at the lower outer end of the basket of the electric lifting basket body; the detection switch and control circuit are installed in the electrical control box, which is fixedly installed in the basket, and the power output terminal of the detection switch is electrically connected to the power input terminal of the control circuit, and the power output terminal of the control circuit is electrically connected to the power input terminal of the electric telescopic rod.

[0006] Furthermore, the probe of the detection switch is aligned with the inner rear end of the basket. The detection switch is equipped with a relay. The positive power input terminal of the detection switch is connected to the control power input terminal of the relay, the power output terminal of the detection switch is connected to the positive power input terminal of the relay, and the negative power input terminal of the detection switch is connected to the negative power input terminal of the relay.

[0007] Furthermore, the two contact pieces and the two slip rings are electrically rotating contacts.

[0008] Furthermore, when the movable column of the electric telescopic rod is at the rear stop point, the front end of the contact wheel and the front end of the electric lifting basket body are on the same vertical plane.

[0009] Furthermore, the control circuit includes a first sub-circuit and a second sub-circuit. The first and second sub-circuits have the same structure, each including an electrically connected three-terminal voltage detector, a transistor, a relay, and a resistor. The positive power input terminal of the three-terminal voltage detector is connected to one end of the adjustable resistor and one end of the first resistor. The other end of the first resistor is connected to the negative power input terminal of the three-terminal voltage detector, the emitter of the transistor, and the negative control power input terminal of the relay. The power output terminal of the three-terminal voltage detector is connected to one end of the second resistor. The other end of the second resistor is connected to the base of the transistor. The collector of the transistor is connected to the negative power input terminal of the relay. The positive power input terminal of the relay is connected to the positive control power input terminal.

[0010] Furthermore, the pressure sensor signal output terminal of the contact wheel mechanism and the signal input terminal of the control circuit are electrically connected.

[0011] Compared with the prior art, the advantages of this utility model are as follows: This utility model is based on the electric lifting basket body, and replaces the guide wheel of the electric lifting basket body with a contact wheel mechanism. In application, no manual control by the operator is required. After the operator enters the basket, the detection switch will energize the control circuit and pressure sensor. In actual work, if the distance between the basket and the front end of the working surface is too large or too small, the pressure sensor will detect it and automatically adjust the distance between the contact wheel of the contact wheel mechanism and the working surface to a suitable state (that is, to maintain the appropriate force between the front end of the contact wheel and the working surface). Moreover, when working in front of steel materials (such as oil tanks), the contact wheel can be attracted to the working surface by the action of an electromagnet, which brings convenience to the operator and achieves better safety. Therefore, this utility model has good application prospects. Attached Figure Description The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 , 3 This is a partial structural schematic diagram of the present invention.

[0014] Figure 4 This is the circuit diagram of this utility model. Detailed Implementation

[0015] Figure 1 , 2As shown in Figures 3 and 4, a novel suspended platform device includes an electrically lifting suspended platform body 1, a power module A1, a detection switch A2, and power switches S1 and S2. The guide wheels of the electrically lifting suspended platform body 1 are removed and not used. It also includes a control circuit 2 and a contact wheel mechanism 3. There are two sets of the control circuit 2 and the contact wheel mechanism 3 (one set of control circuit 2 and one set of contact wheel mechanism 3 are used together). Each set of contact wheel mechanism includes an electromagnet DC, an electric telescopic rod M1, a contact wheel 31, a "]"-shaped fixing frame 32, a pressure sensor A, and a contact wheel. Contact wheel 31 is made of steel and has a hollow internal structure. A ring-shaped electromagnet DC is fixedly installed inside contact wheel 31. A shaft 33 is fixedly installed at each of the outer middle portions of both ends of contact wheel 31. There are shaft holes on both sides of the front end of the fixing frame 31, and a bearing 34 is fixedly installed in each shaft hole. The shafts 33 at both ends of contact wheel 31 are fixedly installed in the inner rings of the two bearings 34, and the rear end of contact wheel 31 is located between the inner sides of fixing frame 32. The wire connected to electromagnet DC is led outward through an opening at the left end of contact wheel 31, and the rear end of fixing frame 32... One end (force-bearing surface) of the pressure sensor A is fixedly installed, and the other end (mounting surface) of the pressure sensor A is fixedly installed on the front end of the movable column of the electric telescopic rod M1. An insulating sleeve 35 is fixedly installed on the outer side of the shaft at the left end of the contact wheel 31. Two copper slip rings Q are fixedly installed at intervals on the outer side of the sleeve 35. The wires connecting the inner sides of the two copper slip rings Q (the height of which is lower than the height of the slip rings Q) and the wires connected to the electromagnet DC are respectively connected. An insulating seat 36 is fixedly installed at the front of the left inner end of the fixing frame 32 at the rear end of the bearing. Two copper contact plates J are fixedly installed at a certain distance on the upper left and right sides of the seat 36; the cylinders of the electric telescopic rods M1 of the two sets of contact wheel mechanisms are fixedly installed at a distance on the left and right sides of the lower outer end of the basket of the electric lifting basket body 1; the power module A1, the detection switch A2, the power switches S1 and S2, and the control circuit 2 are installed in the electrical control box 4. The electrical control box 4 is fixedly installed in the upper front part of the basket, and the detection surface of the detection switch A and the handles of the power switches S1 and S2 are located outside the openings in the middle and right parts of the rear end of the electrical control box 4, respectively. The following descriptions of one set of pressure sensors and one set of control circuits are representative examples.

[0016] Figure 1 , 2As shown in Figures 3 and 4, the probe of the detection switch A2 is aligned with the inner rear end of the basket. The detection switch A2 is equipped with a relay K1 connected via circuit board wiring. The positive power input terminal 1 of the detection switch A2 is connected to the control power input terminal of the relay K1, the power output terminal 3 of the detection switch A2 is connected to the positive power input terminal of the relay K1, and the negative power input terminal 2 of the detection switch A2 is connected to the negative power input terminal of the relay K1. The lower front ends of the two contact pieces J and the outer upper ends of the two slip rings Q are electrically rotatably contacted. When the movable column of the electric telescopic rod M1 is at its rear stop point, the front end of the contact wheel 31 and the front end of the electric lifting basket body 1 are on the same vertical plane. The two control circuits have the same structure. Each control circuit includes a first sub-circuit and a second sub-circuit. The first sub-circuit includes a three-terminal voltage detector A3, a transistor T1, a relay K, and resistors R1 and R2 connected by circuit board wiring. The positive power input terminal 1 of the three-terminal voltage detector A3 is connected to one end of the adjustable resistor RP1 and one end of the first resistor R1. The other end of the first resistor R1 is connected to the negative power input terminal 2 of the three-terminal voltage detector A3, the emitter of the transistor T1, and the negative control power input terminal of the relay K. The power output terminal 1 of the three-terminal voltage detector A3 is connected to one end of the second resistor R2. The other end of the second resistor R2 is connected to the base of the transistor T1. The collector of the transistor T1 is connected to the negative power input terminal of the relay K. The positive power input terminal of the relay K is connected to the positive control power input terminal. The second sub-circuit includes a three-terminal voltage detector A4, a transistor T2, a relay K2, and resistors R3 and R4 connected via circuit board wiring. The positive power input terminal 1 of the three-terminal voltage detector A4 is connected to one end of the adjustable resistor RP2 and one end of the first resistor R3. The other end of the first resistor R3 is connected to the negative power input terminal 2 of the three-terminal voltage detector A4, the emitter of the transistor T2, and the negative control power input terminal of the relay K2. The power output terminal 1 of the three-terminal voltage detector A4 is connected to one end of the second resistor R4. The other end of the second resistor R4 is connected to the base of the transistor T2. The collector of the transistor T2 is connected to the negative power input terminal of the relay K2. The positive power input terminal of the relay K2 is connected to the positive control power input terminal.

[0017] Figure 1 , 2As shown in Figures 3 and 4, the power input terminals 1 and 2 of the pressure sensor A of the two sets of contact wheel mechanisms are connected by wires, and the signal output terminal 3 of the pressure sensor A of the two sets of contact wheel mechanisms and the other ends of the adjustable resistors RP1 and RP2 of the signal input terminals of the two sets of control circuits are connected by wires. The power input terminals 1 and 2 of power module A1 are connected in series with the first power switch S1 and the two poles of AC 220V power supply via wires. The power output terminals 3 and 4 of power module A1 are connected in series with the second power switch S2 and the rear ends of the two contact pieces J via wires. The power output terminals 3 and 4 of power module A1 are connected to the power input terminals and pin 2 of detection switch A2 via wires. The normally open contact terminal and negative power input terminal of relay K1 of the detection switch are connected to the positive power input terminals of relays K1 and K2 of the two sets of control circuits and the emitters of transistors T1 and T2. The power input terminals 1 and 2 of pressure sensor A of the two sets of contact wheel mechanisms are connected via wires. The two normally open contacts of relay K1 and the two normally closed contacts of relay K2 of the two sets of control circuits are connected to the positive and negative and negative and positive and negative and positive power input terminals of the two sets of electric telescopic rods M1 via wires.

[0018] Figure 1 , 2As shown in Figures 3 and 4, this utility model is based on the electric lifting suspended platform body 1, replacing the guide wheel of the electric lifting suspended platform body with a contact wheel mechanism 3. In specific operation, the electric lifting suspended platform body 1 is equipped with a lifting wire rope installed at a high point in the work area. The lower end of the wire rope is fixedly connected to the electric winch 102 inside the suspended platform via a pulley block 101 on the basket (usually also equipped with a wire rope safety lock 103; if the suspended platform descends too quickly for various reasons, the wire rope safety lock 103 prevents the equipment from descending along the wire rope, reducing the probability of accidents). During operation, the worker stands inside the basket and controls the winch 102 to wind or unwind the wire rope via a power switch, thereby raising or lowering the suspended platform to different heights to complete the work. When the power switch S1 is turned on, the power input terminal of the power module A1 is energized, and pins 3 and 4 of the power module A1 output a stable DC 12V power supply, which enters the power input terminal of the detection switch A2, energizing and activating the detection switch A2. When no one enters the basket, pin 3 of the detection switch A2 does not output a high level, so relay K1 will not be energized and will not operate, and the control circuit and pressure sensors will not be powered on. When someone enters the basket and is within the detection range of the detection head of the detection switch A2, pin 3 of the detection switch A2 outputs a high level, which enters the positive power input terminal of relay K1. Relay K1 is energized and its control power input terminal and normally open contact terminal close, thereby energizing both sets of pressure sensors A and both sets of control circuits. When the working surface in contact with the front end of the contact wheel 31 is made of steel, the operator turns on the power switch S2. The 12V power supply then flows through two contact pieces J (two sets in total) and two copper slip rings Q (two sets in total) to the power input terminals of the two sets of electromagnets DC. The electromagnets DC are energized, generating a magnetic force. This magnetic force acts on the working area (e.g., a steel oil tank) through the two contact wheels 31, causing the contact wheels to engage with the front end of the working area. This makes the basket more stable and prevents it from wobbling at the front end of the working surface. When the power switch S2 is turned off, the electromagnets DC lose power and no longer generate an attractive force, allowing the contact wheels to move normally up and down along the working surface. In this new design, the contact pieces J and rings Q are in rotational electrical contact, so whether the contact wheel 31 rotates clockwise or counterclockwise, the electromagnets DC are energized and function when the contact wheel stops moving.

[0019] Figure 1 , 2As shown, when the front end of the contact wheel 31 contacts the working surface (such as a wall), the reverse force of the contact wheel 31 contacting the wall will act on the force-bearing surface of the pressure sensor A. When the position of the contact wheel is fixed and the basket is farther away from the working surface, the force exerted by the basket on the working surface through the contact wheel is relatively large. Thus, the voltage signal output by pin 3 of the pressure sensor A is relatively large. Conversely, when the basket is closer to the working surface, the force exerted by the basket on the working surface through the contact wheel is relatively small. Thus, the voltage signal output by pin 3 of the pressure sensor A is relatively small. When the basketball hoop and the working surface are perpendicular and parallel, and the front end of contact wheel 31 is just touching the working surface, the voltage signal output from pin 3 of pressure sensor A is relatively low. This voltage signal is divided by adjustable resistor RP1 and resistor R1 and enters pin 3 of three-terminal voltage comparator A3. Since this voltage is less than the 4.75V threshold voltage inside comparator A3, pin 1 of comparator A3 does not output a voltage signal, relay K is not energized, and electric push rod M1 is not energized. When the basketball hoop and the working surface are no longer perpendicular and parallel, and the force exerted by the front end of contact wheel 31 on the working surface is relatively large (the forward movement distance of the contact wheel is relatively large), the voltage signal output from pin 3 of pressure sensor A is relatively high. The signal is divided by adjustable resistor RP1 and resistor R1 and enters the voltage at pin 3 of the three-terminal voltage comparator A3. The voltage is higher than the 4.75V threshold voltage inside the three-terminal voltage comparator A3. The output voltage signal at pin 1 of the three-terminal voltage comparator A3 is stepped down and current limited by resistor R2 and enters the base of transistor T1 (voltage higher than 0.7V). Transistor T1 conducts and the collector outputs a low level, which enters the negative power input terminal of relay K. Relay K is energized and its control power input terminal and normally open contact terminal are closed. Then, the positive and negative power input terminals of one or two sets of electric telescopic rods M1 are energized. The movable column of one or two sets of electric telescopic rods M1 drives the contact wheel 31 to move backward. In this way, the distance between the basket and the working surface is reduced. After the basket and the working surface are perpendicular again, the electric telescopic rod stops moving. When the basket and the working surface are perfectly perpendicular and parallel, and the front end of the contact wheel 31 is in contact with the working surface, the voltage signal output from pin 3 of the pressure sensor A is relatively high. This voltage signal is divided by the adjustable resistor RP2 and resistor R3 and enters the voltage at pin 3 of the three-terminal voltage comparator A4. This voltage is higher than the 4.75V threshold voltage inside the three-terminal voltage comparator A4. The voltage signal output from pin 1 of the three-terminal voltage comparator A4 is reduced and current-limited by resistor R4 and enters the base of transistor T2 (voltage higher than 0.7V). Transistor T2 conducts, and the collector outputs a low level that enters the negative power input terminal of relay K2. Relay K2 is energized and its control power input terminal and normally closed contact terminal are opened. In this way, the negative and positive power input terminals of one or two sets of electric telescopic rods M1 will not be energized, and the movable column of one or two sets of electric telescopic rods M1 will not drive the contact wheel 31 to move forward.When the basket and the working surface are no longer perpendicular and parallel, and the force exerted by the front end of the contact wheel 31 on the working surface is relatively small (the distance the contact wheel moves forward is relatively small), the voltage signal output by pin 3 of the pressure sensor A is relatively low. The voltage signal output by pin 3 of the pressure sensor A is divided by the adjustable resistor RP2 and the resistor R3 and enters the voltage at pin 3 of the three-terminal voltage comparator A4. Since the voltage is lower than the 4.75V threshold voltage inside the three-terminal voltage comparator A4, pin 1 of the three-terminal voltage comparator A4 stops outputting a voltage signal. The transistor T2 is cut off, and the collector no longer outputs a low level to the negative power input terminal of the relay K2. The relay K2 is de-energized and no longer engages its control power input terminal and normally closed contact terminal. Consequently, the negative and positive power input terminals of one or two sets of electric telescopic rods M1 are energized, and the movable column of one or two sets of electric telescopic rods M1 drives the contact wheel 31 to move forward. In this way, the distance between the basket and the working surface increases, and the contact wheel and the working surface make effective contact. After the basket and the working surface are perpendicular again, the electric telescopic rod stops moving.

[0020] Figure 1 , 2 As shown in Figure 3, through the above, in this new application, no manual control by the staff is required. After the staff enters the basket, the relevant equipment is powered on and works. In actual work, if the distance between the basket and the front end of the working surface is too large or too small, the pressure sensor will detect it and automatically adjust the distance between the contact wheel of the contact wheel mechanism and the working surface to a suitable state (that is, to keep the force between the front end of the contact wheel and the working surface appropriate). Moreover, when working in front of steel materials (such as oil tanks), the contact wheel can be attracted to the working surface by the action of an electromagnet, which brings convenience to the staff and can achieve better safety. Figure 3 In the diagram, power module A1 is a finished product of AC 220V to DC 12V power module; electric telescopic rod M1 is a finished product of 50W reciprocating electric telescopic rod; electromagnet DC is a finished product of 40W DC electromagnet; pressure sensor A is a finished product of HZC-30A planar pressure weighing sensor, which has two power input terminals and one signal output terminal. The higher the detected voltage signal, the higher the output voltage signal, and vice versa; three-terminal voltage detectors A3 and A4 are model AN051A; relays K1, K2, and K are model D. C12V; transistors T1 and T2 are 9013 (NPN type); resistors R1, R2, R3, and R4 have resistance values ​​of 725Ω, 4.7KΩ, 725Ω, and 4.7KΩ respectively; adjustable resistors RP1 and RP2 have resistance values ​​of 47KΩ (adjustable to 7.25KΩ and 7.2KΩ respectively); the detection switch A2 is a finished human infrared sensor of model HC-SR501, which has two power input terminals and one signal output terminal. When the detector does not detect a human signal, the signal output terminal does not output power; otherwise, it outputs a power signal.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0022] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel suspended platform device, comprising an electrically lifting suspended platform body and a detection switch, characterized in that, It also includes a control circuit and a contact wheel mechanism. The contact wheel mechanism includes an electromagnet, an electric telescopic rod, a contact wheel, a fixed frame, and a pressure sensor. The contact wheel is made of steel and has a hollow internal structure. The electromagnet is fixedly installed inside the contact wheel. The shafts at both ends of the contact wheel are rotatably installed at the front end of the fixed frame. The rear end of the fixed frame is fixedly installed at one end of the pressure sensor, and the other end of the pressure sensor is fixedly installed at the front end of the movable column of the electric telescopic rod. An insulating sleeve is fixedly installed on the outside of the shaft at one end of the contact wheel. Two metal slip rings are fixedly installed at intervals on the outside of the sleeve. The wires connected inside the two slip rings are connected to the power input terminal of the electromagnet. An insulating seat is fixedly installed at one end of the inner side of the fixed frame. Two metal contact plates are fixedly installed at intervals on the outside of the insulating seat. The cylinders of the two electric telescopic rods are fixedly installed at the lower end of the basket of the electric lifting basket body. The detection switch and the control circuit are installed in the electrical control box, which is fixedly installed inside the basket. The power output terminal of the detection switch is electrically connected to the power input terminal of the control circuit, and the power output terminal of the control circuit is electrically connected to the power input terminal of the electric telescopic rod.

2. The novel suspended platform device according to claim 1, characterized in that, The probe of the detection switch is aligned with the inner rear end of the basket. The detection switch is equipped with a relay. The positive power input terminal of the detection switch is connected to the control power input terminal of the relay, the power output terminal of the detection switch is connected to the positive power input terminal of the relay, and the negative power input terminal of the detection switch is connected to the negative power input terminal of the relay.

3. The novel suspended platform device according to claim 1, characterized in that, The two contact plates and two slip rings are electrically rotating contacts.

4. The novel suspended platform device according to claim 1, characterized in that, When the movable column of the electric telescopic rod is at the rear stop point, the front end of the contact wheel and the front end of the electric lifting basket body are on the same vertical plane.

5. The novel suspended platform device according to claim 1, characterized in that, The control circuit includes a first sub-circuit and a second sub-circuit. The first and second sub-circuits have the same structure, each including an electrically connected three-terminal voltage detector, a transistor, a relay, and a resistor. The positive power input terminal of the three-terminal voltage detector is connected to one end of the adjustable resistor and one end of the first resistor. The other end of the first resistor is connected to the negative power input terminal of the three-terminal voltage detector, the emitter of the transistor, and the negative control power input terminal of the relay. The power output terminal of the three-terminal voltage detector is connected to one end of the second resistor. The other end of the second resistor is connected to the base of the transistor. The collector of the transistor is connected to the negative power input terminal of the relay. The positive power input terminal of the relay is connected to the positive control power input terminal.

6. The novel suspended platform device according to claim 1, characterized in that, The pressure sensor signal output terminal of the contact wheel mechanism and the signal input terminal of the control circuit are electrically connected.

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